Parenteral injection apparatus

Abstract

The disclosure relates to a parenteral injection apparatus that guides a needle of an injector into a target site to deliver medicaments and other fluids.

What is claimed is: 
     
       1. An injection apparatus comprising:
 a syringe housed within a sleeve, the syringe comprising a barrel, a needle mounted to an end of the barrel, a plunger, and a seal slidably mounted in the barrel; 
 a housing; and 
 the sleeve having an arm that extends from the sleeve and is coupled to the housing such that the sleeve is configured to rotate within the housing and guide the needle to a target site; 
 wherein the housing comprises: 
 a protruded member extending upwardly from a planar member of the housing; and 
 the protruded member comprising a cavity sized to receive the sleeve therein; 
 wherein: 
 at least one side wall of the protruded member comprises a hollow sized to receive a rotation button disposed on a distal end of the arm of the sleeve, and 
 the housing and sleeve are rotatably coupled to one another via the rotation button positioned within the hollow; 
 wherein: 
 the hollow includes one or more rotation recesses sized to receive a detent protruding from an outer surface of the rotation button, and 
 a position of a rotation recess corresponds to an insertion position of the sleeve. 
 
     
     
       2. The injection apparatus of  claim 1 , wherein the housing further comprises one or more rigid reinforcing members, the reinforcing member extending between a side wall of the protruded member and an upper surface of the planar member. 
     
     
       3. The injection apparatus of  claim 1 , wherein the planar member comprises curved outer ends disposed on opposite sides of the protruded member. 
     
     
       4. The injection apparatus of  claim 1 , wherein a contact portion of the planar member comprises a smooth surface defining an opening that forms a channel with the cavity, the opening sized to allow the needle to pass therethrough. 
     
     
       5. The injection apparatus of  claim 1 , wherein the sleeve comprises a second arm extending from the sleeve and positioned to engage the housing to fix the sleeve and syringe with respect to the housing upon rotation of the sleeve to an engagement position. 
     
     
       6. The injection apparatus of  claim 5 , wherein the second arm is a flexible member having a hook on a distal end of the second arm and a contact portion extending away from the hook and disposed to allow a user to assert pressure against the contact portion to bend the flexible member. 
     
     
       7. The injection apparatus of  claim 6 , wherein in a preparation position, the hook is engaged with a top portion of a bridge of the housing such that the needle is positioned within the housing and the sleeve is inhibited from rotating towards a bottom of the housing. 
     
     
       8. The injection apparatus of  claim 6 , wherein in an insertion position, the hook is engaged with a bottom portion of a bridge of the housing such that the needle is positioned outside of a bottom of the housing and the sleeve is inhibited from rotating towards a top of the housing. 
     
     
       9. The injection apparatus of  claim 1 , wherein an end of the sleeve comprises flexible interlocking members that are positioned on opposing sides of the sleeve and are configured to interlock with a flange of the barrel. 
     
     
       10. The injection apparatus of  claim 1 , wherein:
 the sleeve further comprises:
 a receiving portion having a rigid channel disposed between a first end and a second end, the arm being positioned on the first end of the receiving portion; and 
 a connection portion coupled to the second end of the receiving portion at a proximal end of the connection portion, the connection portion comprising a flange having receiving slots disposed on opposite sides of the flange, the receiving slots configured to receive a respective portions of a barrel flange of the syringe. 
 
 
     
     
       11. An injection apparatus comprising:
 a housing having a protruded member extending upwardly from a planar member of the housing, the protruded member comprising a cavity sized to receive a sleeve therein; and 
 the sleeve being configured to receive a syringe and having an arm that extends from the sleeve and is rotatably coupled to the housing such that the sleeve is rotatable within the housing to guide a needle of the syringe to a target site; 
 wherein: 
 at least one side wall of the protruded member comprises a hollow sized to receive a rotation button disposed on a distal end of the arm of the sleeve, and 
 the housing and the sleeve are rotatably coupled to one another via the rotation button positioned within the hollow; 
 wherein: 
 the hollow includes one or more rotation recesses sized to receive a detent protruding from an outer surface of the rotation button, and 
 a position of a rotation recess corresponds to an insertion position of the sleeve. 
 
     
     
       12. The injection apparatus of  claim 11 , wherein the housing further comprises one or more rigid reinforcing members, the reinforcing member extending between a side wall of the protruded member and an upper surface of the planar member. 
     
     
       13. The injection apparatus of  claim 12 , wherein a contact portion of the planar member comprises a smooth surface defining an opening that forms a channel with the cavity, the opening sized to allow the needle to pass therethrough. 
     
     
       14. The injection apparatus of  claim 11 , wherein the sleeve comprises a second arm extending from the sleeve and positioned to engage the housing to fix the sleeve and syringe with respect to the housing upon rotation of the sleeve to an engagement position. 
     
     
       15. The injection apparatus of  claim 11 , wherein:
 in a first position, the sleeve is configured within the housing to locate the needle of the received syringe within the housing, and 
 in a second position, the sleeve is configured within the housing to locate at least a portion of the needle is positioned outside of the housing.